Method and apparatus for making hollow rubber articles.



. -i3-'. BEYNON.

' u'mwu AND APPARATUS FOR mums HOLLQWLR'UBBER ARTICLES.

Patented Aug. 2119M 2 $HEETS-SHEET 1.

APPLICATION FILED JAN. '10. 191'? Inventor: fiecsBq/iwz,

. his Atty BEYNON METHOD AND APPARATUS FOR MAKING HOLLOW RUBBER ARTICLES.

- nrrucguou FILED ml lofl n bnf PatentedAug. 27, l9l&

2 gains-sum 2.

Inventor: I 'fieesb'eylwrz,

UNITED STATES PATENT OFFICE.

REES BEYNON, OF CHICAGO, ILLINOIS. ASSIGNOR TO THE MECHANICAL RUBBER COM- PANY, A CORPORATION OF NEW JERSEY.

METHOD AND Specification of Letters Patent.

Patented Aug. 27, 1918.

Application filed January 10, 1917. Serial No. 141,514.

To all whom it may concern:

lie it known that 1. Runs lmrxox, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in the Methods and Apparatus for Making Hollow Rubber Articles, of which the following is a full, clear, and exact description.

This invention relates to molded hollow rubber articles, particularly to those with small openings or necks through which the molding core cannot conveniently be removed, such as hot water bottles and the like.

In practising my invention I preferably use apparatus, whereby when the core ot the bottle body mold is removed through an opening at the nec'lt-..portion of the body the edges of said 0 en'ing may be thereafter vulcanizedand t l ie fill1ng-funnel simultaneously vulcanized to the body, in a special mold having a special core, which will be hereinafter more fully'set forth.

By the use of my improved method and apparatusa hot water bottle 01" similar article is produced which is substantially a molded article without joint, and one in which the usual method of cementing the edges is obviated.

The invention can be easily understood from the following description taken in connection with the accompanying drawing in which-- Figure 1 is a plan view of the bottle body mold and core, with the upper section of the mold removed and showing the body of the bottle in cross-section.

Fig. 2 is a longitudinal sectional view on the. line 2-2 Fig. l with the core in elevation.

Fig. 3 is a fragmentary sectional view on the line 3-3 Fig. 1.

Fig. l is a plan view of the final mold and core, with the upper section of the mold removed and showing the assembled parts of the bottle in cross-section.

Fig. 5 a longitudinal sectional view on the line 5-5 Fig. 4 with the core in elevation.

Fig. 6 is a detail plan view of the fillingfunnel with a pot'iim broken away.

Referring to the lrawing, 10 designates a core for molding the interior of the body. of a hot water but tle. The core is provided with flanges 11 at the neck portion which form an opening 12 in the neck portion or" the body through which the core is removed. The neck portion of the core is provided with a core support having dowel openings When the core 10 is covered with a sheet of unvnlcanized rubber sufficient to form the body ll of the bottle, the same is inclosed in mold sections 15 held together by dowel pins 16, and which have suitable recesses therein to give the correct thickness to the walls of the body, and are also provided with dowel pins 17 which enter the openings 13 and correctly locate the core within the mold when the sections are assem bled. The above described parts bein assembled, the mold with its contents is p aced in a vulcanizer and the rubber stock cured in the usual way; The sections 15 of the n'rold are then removed, and the core 10 re moved from the body of the bottle by pulling it through the opening formed att the body by the flanges neck portion oi: The rubber is suiiiciently elastic to permit this without injuring .theedges of theopenmg. y

The. filling't'unnel 18 of the bottle is formed separately from the body in any preferred manner, preferably by molding, and is vulcanized to the body simultaneousl. with the sealing of the opening through which the core 10 is withdrawn. To accomplish this the funnel is first supported upon a special core comprising a support 19, having a portion adapted to conform to the in-. terior of the filling-funnel, and provided with a longitudinal opening 20 therethrough, which receives half round rods 21 the upper ends of which project from the support and are exteriorly threaded to receive a nut The rods are prevented from turning in the opening by a pin 23 which projects from the support into a groove 2a in one of the rods. The lower ends of the rods project from the-support and are terminally bent outwardly to provide diverging arms 25, the purpose of which will presently ing by the cold eure process.

'28 held together in pin 30 in the funnel the margins of the opening with its contents way. If the col body, through which the core was w ithdrawn, and the neck portion 27 of the fillingfunnel is fitted into the neck portion of the body. Prior to this, a vulcanizable cement is applie tothe outer surface of the neck portion of thefuImel and also to. the edges of the opening through which the body forming core was removed, or if prefel 'red a cement may be used which may be vulcanized by sulfur monochlorid when it is desired to unite the parts and seal the open- The assembled parts are then placed between the sections of a special mold which consists of sections the correct relative posi- 29, there being'a dowel core that asses into an opening 31 in one of the lilo (1 sections 28 to correctly locate the parts within the mold whenlthe sections are assembled.- The nut 22 is then turned a sufficient number of times to eausethe arms 25 to be drawnup against through which the core 10 was withdrawn and press the tion bydowel pins edges of the opening tightlyi together, as'

well as )ress the united edges tightly against the mold sections during cure. The me] by placing the same between platens ofa rulcanizing press,.or in any other preferred trons maybe simplyeompressed during the en ring process.

drawing the I After cure the sections 28 ofthe mold are removed and the core is then removed piece meal through the filling f'unnel by drawing the support 19, and finally withpresser arms '25 separately throu h the o n neck of the funnel;

Alt tough I ave described and illustrated 1 I specific a pa'ratus, and outlined a specific sequence 0 producing the molded rubber article, I do to wit? Wither *Iicing any of l'.he"'ui yantages of the invennot limit I yself to the specific apparatus nor to the eciflc sequence of manipulation, since .v'ar oils, modifications may be resorted t departiiigflfrom the spirit or sacrition.

Ilaving thus described my invention, what I claim and desire to protect by Letters Pat- ":ent is:

l. molding (-ore l'or hollow rubberartlcles, comprising a su lport having an openmg'tberell 'rough, rods passing through sanl opening'and terminating beyond the suptick-s, comprising a port in diverging arms, and means for adsaid rods in and nlmlllllg. 2. A moldlng yore for hollow rubber arsupport having an oponlngfliemthmugh,rods passing through said adapted to opening and having one and threaded, and terminating at the other und in an arm conform to the neck portion of rngfunnel may be suppliedwith heat cure is used, the mold sec-' first removing the nut 22, then with manipulation of materials in,-

i'nthe scope of the appended claims the article. and a out on the threaded ends of the rodsfor moving the rods longitudi nally through said opening.

The process of manufacturing hollow rubber articles comprising a. body and a filling-funnel initially separately formed, which consists in vulcanizmg the body separately around a suitable core in a mold,- simultaneously forming in the neck portion of the body an opening,'removing the core throu h said opening, and then simultaneousy closing said o inning and ullitingthe filling-funnel to the body.

The proces of manufacturinghollow rubber articles com rising a body and a fillingfunnel initially separately fornu-d. which consists in vulcanizing um body separately around a suitable core in a mold.

through said opening and then simultaneously sealing the opemng'through which the core was withdrawn and uniting thefilling funnel to the body by vulcanization. e process of manufnetl'lring hollow rubber articles comprising a body and a fillinitin l separately formed.

which consists in vl'iliianizmg' the body's-opa- "rately around a suitable core in a mold. si-

multan'eouslyforming in the neck portion of the body an opening, removing theuore through said opening, and then simultnnu ously vuleanizing the edges of the opening together and vul'canizing thefilling-funnel to the body. in a second mold,

6. The process of manufacturing hollow rubber articles comprising a. bodylanda fill? ing funnel, which in a mold, simultaneously forming in the neck portion"of the y an opening. removingthe eore'through said 0 ening. inserting a presser arm. through the opening and into engagement with the margins thereof, applying the filling-funnel to the "neck portion of the body, and then simultaneously vuleanizing the edges of said opening together and .vulcanizing .the fillingfunnel to the. y in a second mold which resists the pressure of said-arm.,

7. Apparatus for closing a (lilfl l'fifl'lQVlllflopeningextending into theneck of a Water bottle or the like and "for assembling the l'nuiu-l and body portion loge-then. wbii-h comprises an outer mold for exteriorly supporting l'be body portion and funnel and walls about the opening. a core :llllllllt'll lo engage the said walls on, the interior Ihcro of and to extend through the funnplgto llu ('Xlol'ior, and I exterior portion of the core'to draw lbe roro toward the oppositely disposed walls of lhe mold into operable roiiporal'ion (herewith.

8. Apparatus for closing a ('olii mmioviHgopening extending into the neck of a water nu-ans cooperating \vilb the ill) consists in vulcanizing the body separately around-asuitahle-core bottle or the like which comprises an outer mold for supporting the walls about the openin a core'easily removablethrough the neck the bottle and having its lower end bent to engage the inner walls about the openin and its opposite end extending from t e neck ofthe bottle, and means engagin the extendin end to draw the (-ore towar the opposite y disposed supporting walls of the mold int'o operable cooperation therewith. a v

9. Apparatus for closing a core-reinovingopening extending into the neck of a water 'bottle or the like and for assembling the funnel and body portion together, which comprises an outer mold for cxteriorly sup portingmthe body portion and funnel and walls a ut the opening, a core for engaging the, funnel interiorly, provided with an openin extending therethrough, a core adapted to engage the said wallson the interior thereof and to extend through the said opening to the exterior-,- and means cooperating with the extended portion to draw the core toward the oppositely disposed walls of the mold into operable engagement therewith.

10. Apparatus for. closing a core-removing-opening extending into the neck of a water bottle or the like and for assembling the funnel and body portion together, which comprises an outer mold for exteriorly supporting the body portion and funnel and walls about the opening, a core for engaging the funnel interiorly, rovided with an opening extending theretl irough, means for se curing the core and mold in fixed relative positions, a closing core adapted to engage the said walls on the interior thereof and to extend through the said opening to the exterior, and means engaging said extended portion and coiiperating with said first core to move the said first core and mold relative to the closing core.

11. Apparatus for closing a core-removing openmg extending into the neck of a water bottle or the like, which eomprises an outer mold for supporting the walls about the opening, a core formed of independent sections adapted to extend through the neck of the bottle and having their lower ends bent to engage the inner Walls about the openin" and their op osite ends extending from t e neck of the ttle, and means for securing the sections together at their outer ends and for drawing them simultaneously toward the oppositely disposed supporting walls of the mold.

Signed at Chicago, 111., this 2nd day of January, 1917;

REES BEYNON. 

